The Torah describes the procedure for a metzora (a person afflicted with tzara'at) upon the conclusion of his isolation period. This process extends for a week and involves korbanot and immersions in the mikveh. Then, a kohen must pronounce the metzora pure. A metzora of limited financial means may substitute lesser offerings for the more expensive animals. Before a kohen diagnoses that a house has tzara'at, household possessions are removed to prevent them from also being declared ritually impure. The tzara'at is removed by smashing and rebuilding that section of the house. If the tzara’at signs reappear, the entire building must be razed. The Torah details which bodily secretions render a person spiritually impure, and thereby prevent his contact with holy items. And the Torah defines how one regains a state of ritual purity.